The road trip from Athens to Ermioni lasts around 2.5 hours while the approach is done with flying dolphins. You can fly to Nafplio (at a distance of 85 km from Ermioni), visit Mycenae, be in the most neighboring resorts: Porto Heli, Spetses and Hydra, and even watch a show in Ancient Epidaurus.
In addition, there are frequent bus routes from Athens and Nafplio. It takes two hours for the flying dolphins from the port of Piraeus, passing through Poros, Hydra and Spetses. In the port of Ermioni, you can find sea taxis to visit the beautiful Hydra.
Access to Spetses from Ermioni is very easy, just 20 minutes drive from Ermioni to Costa and 5-15 minutes by boat, ferry boat or sea taxi to Spetses.